Buffing wheel



June 4, 1929. E, HE B RG 1,715,362

BUFFING WHEEL Filed July 20, 1927 ing drawings anumber of flexible fabric dis s ing completely through the disks and thepile ric and leather disks together and leave a Patented June 4, 1929.

UNITED S A ES PATENT orrlce.

EDWARD s. HERBERG, or ASTORIA, new YORK, .assreuon'ro BARKER 1230s., 1nd,-

A CORPORATION OF NEW YORK.

eurrnve WHEEL.

Application filed July 20,

This invention relates to rotary polishin apparatus and particularly to abutting whee I adapted to be mounted on a tapered threaded arbor to rotate therewith.

The object of the invention is to provide a simple inexpensive buiiing wheel of this type which will be rugged and durable in service. Hitherto there has been a tendency for the threads of the arbor to wear loose in the wheel so as tolose its grip thereon and the useful life of the wheel has thus been shortened.

In the bufiing wheel of this invention a secure and durable grip between the tapered arbor and wheel is provided by a very simple and inexpensive construction of the wheel.

In the accompanying drawings illustrating the invention.

Fig. 1 is a perspective view of the wheel;

. Fig. 1 is a partial sectional view showing the application of the wheel to an arbor;

Fig. 2 is a central sectional view of a wheel illustrating the modification, and

Fig. 3 is a face view of the wheel of Fig. 2 on enlarged scale and with the outer. portion of the wheel broken away.

In the wheel illustrated in the aceompan 5 of circular formation are packed together'in a pile with a facing disk 6 on each side of fieTir ible leather or other fibrous material. 7 pack with the leather disks is sewed together by the cord 7 or other fastening means passin a generall polygonal form concentric with the circle 0 the disks. This threading 7 is drawn tight so as to snugly compact the fab.-

bulge in each direction toward the center and toward the periphe as shown in Fig. 2. The fabric and leather 'sks have central holes 8 in register at the exact center of the wheel and through these holes the inner portions of the disks are impregnated with a hardening compound, such as shellac, forming a hardened core for the wheel. This hardened core is within but extends to the ring of threading 7, the fabric and leather disks thoroughly absorbing the shellac to the area where they are tightly drawn together by the threading. In this way there is formed a composite wheel having a core of hardened leather and fabric and continuing outward from the core 1927. swarm. 207,032.

the leather and fabricv disks in flexible formation. Surrounding the core and between l the core'and the periphery is the threading 7 forming a drawn compact area and acting to said arbor or mandrel cutting its own threads and forming its own taper in the central core. The hardened leather and fabric material of the core form. a very tough and resistant combination securely holding the wheel on the arbor. The tendencyof the work is todrive the wheel further and further up on-thetaper of the arbor but this is resisted by the hardness and toughness of the core and by the tight sewingof .the cord 7 holding the corev against expansion or loosening in any way; At'the same time the c'ombinedleather and fabric core is sufiicientlyyielding-to ac:

commodate itself to the mandrel andstronglyg ip it so thatthewheel is accurately and rig dly rotatable With.- .the.-mandrel in service. As indicated, in Figs- 2 and 3, the leather disks 16. may have their central holes 18' smaller than the central'hole 28 of the fabric disks 15. With th'is construction-the insertionz'ofthe tapered. arbor will carry in with it the overhanging. portion'of. the leather disks so as to. form an inwardly bent leather lining for the arborholefand increasing the toughv ness and tiglitnessofthegrip onathe' arbor.

- The' bufling"wheelof this invention is of very'sim-ple formation. consisting of only three arts'the fabric disks,the. leather.disks.

and t e. cordth e hardening shellac rig-idly binding the centralporitionsjof;thetdisks together, ina solid mass." The; are; continuousbetween the hardened corefand the. flexibleouter portion sothat there? is no joint 7 or area of weakness in thetra'nsmis'sion of the rotative force. At the sametimea very tough and adaptable core construction isip'ro-v 1 on the arbor. I claim vided giving a very tight nd du m grip I Ina bufling'wheel the combinationwitha pack of concentric circular disks. 0t flexible] absorbent fabric material, of concentric tac ing disks of smaller diameter on; each side stifi'ening medium absorbed in the absorbent materials of said disks and forming a tough hardened circular core within and extend- 10 ing to said fastening means; the portion of the fabric and fibrous disks beyond said core being uniformly flexible.

EDWARD S. HERBERG. 

